| Seong Kyung-Il | |
| Fullname: | Seong Kyung-Il |
| Birth Date: | 1 March 1983 |
| Birth Place: | South Korea |
| Height: | 1.87 m |
| Position: | Goalkeeper |
| Youthclubs1: | Konkuk University |
| Years1: | 2004–2007 |
| Years2: | 2008–2011 |
| Years3: | 2009–2010 |
| Clubs1: | Jeonbuk Hyundai Motors |
| Clubs2: | Gyeongnam FC |
| Clubs3: | Gwangju Sangmu (army) |
| Caps1: | 13 |
| Goals1: | 0 |
| Caps2: | 1 |
| Goals2: | 0 |
| Caps3: | 4 |
| Goals3: | 0 |
| Nationalteam1: | South Korea U-23 |
| Pcupdate: | 25 July 2011 |
Seong Kyung-Il (Korean: 성경일; born 1 March 1983) is a South Korean football player who currently plays as goalkeeper.